Electronic device and spatial reuse transmission method

Abstract

An electronic device is provided. The electronic device includes an antenna, a communication module configured to support wireless local area network (LAN) communication, memory storing one or more computer programs; and a processor communicatively coupled to the antenna, the communication module, and the memory, wherein the one or more computer programs include computer-executable instructions that, when executed by the processor, cause the electronic device to perform wireless LAN communication by being connected to a first access point of a first basic service set (BSS) by using the communication module, receive a signal transmitted from at least one device belonging to a second BSS having coverage of which at least portion overlaps the coverage of the first BSS while connected to the first access point, identify whether spatial reuse transmission to the first access point is possible in an environment in which the first BSS and the second BSS overlap each other based on the signal received from the second BSS, determine an optimal value of transmission power of the antenna during the spatial reuse transmission in case that the spatial reuse transmission is possible, and perform spatial reuse transmission to the first access point by using the antenna according to the determined optimal value of the transmission power, wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, in order to determine the optimal value of the transmission power of the antenna, cause the electronic device to configure an initial value of the transmission power of the antenna, transmit a signal to the first access point through the antenna with a transmission power lower than the initial value in case that a signal transmission with the transmission power of the initial value to the first access point is successful, and determine the optimal value of the transmission power based on the transmission power at previous successful signal transmission in case that the signal transmission to the first access point fails.

What is claimed is: 
     
         1 . An electronic device comprising:
 an antenna;   a communication module configured to support wireless local area network (LAN) communication;   memory storing one or more computer programs; and   a processor communicatively coupled to the antenna, the communication module, and the memory,   wherein the one or more computer programs include computer-executable instructions that, when executed by the processor, cause the electronic device to:
 perform wireless LAN communication by being connected to a first access point of a first basic service set (BSS) by using the communication module, 
 receive a signal transmitted from at least one device belonging to a second BSS having coverage of which at least a portion overlaps the coverage of the first BSS while connected to the first access point, 
 identify whether spatial reuse transmission to the first access point is possible in an environment in which the first BSS and the second BSS overlap each other, based on the signal received from the second BSS, 
 determine an optimal value of transmission power of the antenna during the spatial reuse transmission in case that the spatial reuse transmission is possible, and 
 perform spatial reuse transmission to the first access point by using the antenna according to the determined optimal value of the transmission power, and 
   wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, in order to determine the optimal value of the transmission power of the antenna, cause the electronic device to:
 configure an initial value of the transmission power of the antenna, 
 transmit a signal to the first access point through the antenna with a transmission power lower than the initial value in case that a signal transmission with the transmission power of the initial value to the first access point is successful, and 
 determine the optimal value of the transmission power based on the transmission power at previous successful signal transmission in case that the signal transmission to the first access point fails. 
   
     
     
         2 . The electronic device of  claim 1 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to retransmit the signal with one step lower transmission power whenever signal transmission to the first access point is successful. 
     
     
         3 . The electronic device of  claim 1 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to:
 modulate a signal according to the initial value of a modulation coding scheme (MCS) level by using the communication module; and   transmit the modulated signal to the first access point with the transmission power of the initial value.   
     
     
         4 . The electronic device of  claim 3 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to:
 change the MCS level to a second level which is one step lower than a first level in case that the signal transmission to the first access point fails in a state where the transmission power of the antenna is configured to a first intensity and the MCS level is configured to the first level; and   transmit the signal modulated to the MCS level of the second level to the first access point with the transmission power of the first intensity.   
     
     
         5 . The electronic device of  claim 4 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to determine the first intensity as the optimal value of the transmission power of the antenna in case that the second level modulation and the transmission of the signal with a first intensity transmission power are successful. 
     
     
         6 . The electronic device of  claim 5 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to determine the second level as the optimal value of the MCS level in case that the second level modulation and the transmission of the signal with the first intensity transmission power are successful. 
     
     
         7 . The electronic device of  claim 4 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to determine a second intensity, which is one step higher than the first intensity, as the optimal value of the transmission power of the antenna in case that the second level modulation and the transmission of the signal with a first intensity transmission power fail. 
     
     
         8 . The electronic device of  claim 4 , wherein, in case that the first level is the lowest level among MCS levels supported by the communication module, the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to determine a second intensity, which is one step higher than the first intensity, as the optimal value of the transmission power of the antenna when a first level modulation and the transmission of the signal with a first intensity transmission power fail. 
     
     
         9 . The electronic device of  claim 3 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to:
 modulate a signal by configuring the MCS level to a level one step lower than the initial value in case that the signal transmission with the transmission power of the initial value to the first access point fails; and   retransmit the modulated signal with the transmission power of the initial value.   
     
     
         10 . The electronic device of  claim 9 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to:
 retransmit the signal with one step higher transmission power whenever signal retransmission fails; and   determine the transmission power in case that the signal transmission is successful as the optimal value of the transmission power of the antenna.   
     
     
         11 . The electronic device of  claim 1 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to determine the initial value of the transmission power based on the transmission power before detecting the signal of the second BSS or the transmission power during a previous spatial reuse transmission to the first access point. 
     
     
         12 . The electronic device of  claim 1 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to identify whether the spatial reuse transmission is possible based on whether a preamble value of the signal received from the second BSS and an intensity of the signal received from the second BSS are less than a threshold value. 
     
     
         13 . The electronic device of  claim 1 , wherein the one or more computer programs further include computer-executable instructions that, when executed by the processor, cause the electronic device to transmit one MAC protocol data unit (MPDU) or null data packet (NDP) to determine the optimal value of the transmission power of the antenna. 
     
     
         14 . A method for spatial reuse transmission of an electronic device, the method comprising:
 performing wireless local area network (LAN) communication by being connected to a first access point of a first basic service set (BSS);   receiving a signal transmitted from at least one device belonging to a second BSS having coverage of which at least a portion overlaps the coverage of the first BSS while connected to the first access point;   identifying whether spatial reuse transmission to the first access point is possible in an environment in which the first BSS and the second BSS overlap each other, based on the signal received from the second BSS;   determining an optimal value of transmission power of an antenna during the spatial reuse transmission in case that the spatial reuse transmission is possible; and   performing spatial reuse transmission to the first access point by using the antenna according to the determined optimal value of the transmission power,   wherein determining the optimal value of the transmission power comprises:
 configuring an initial value of the transmission power of the antenna, 
 transmitting a signal to the first access point through the antenna with a transmission power lower than the initial value in case that a signal transmission with the transmission power of the initial value to the first access point is successful, and 
 determining the optimal value of the transmission power based on the transmission power at previous successful signal transmission in case that the signal transmission to the first access point fails. 
   
     
     
         15 . The method of  claim 14 , wherein the determining of the optimal value of the transmission power comprises:
 changing a modulation coding scheme (MCS) level to a second level which is one step lower than a first level and transmitting the signal modulated to the MCS level of the second level to the first access point with the transmission power of a first intensity in case that the signal transmission to the first access point fails in a state where the transmission power of the antenna is configured to a first intensity and the MCS level is configured to the first level;   determining the first intensity as the optimal value of the transmission power of the antenna in case that the second level modulation and the transmission of the signal with a first intensity transmission power are successful; and   determining a second intensity, which is one step higher than the first intensity, as the optimal value of the transmission power of the antenna in case that the second level modulation and the transmission of the signal with the first intensity transmission power fail.   
     
     
         16 . The method of  claim 14 , further comprising:
 retransmitting the signal with one step lower transmission power whenever signal transmission to the first access point is successful.   
     
     
         17 . The method of  claim 14 , further comprising:
 modulating a signal according to the initial value of a modulation coding scheme (MCS) level by using a communication module; and   transmitting the modulated signal to the first access point with the transmission power of the initial value.   
     
     
         18 . The method of  claim 14 , further comprising:
 determining the initial value of the transmission power based on the transmission power before detecting the signal of the second BSS or the transmission power during a previous spatial reuse transmission to the first access point.   
     
     
         19 . One or more non-transitory computer-readable storage media storing one or more computer programs including computer-executable instructions that, when executed by one or more processors of an electronic device individually or collectively, cause the electronic device to perform operations, the operations comprising:
 performing wireless local area network (LAN) communication by being connected to a first access point of a first basic service set (BSS);   receiving a signal transmitted from at least one device belonging to a second BSS having coverage of which at least a portion overlaps the coverage of the first BSS while connected to the first access point;   identifying whether spatial reuse transmission to the first access point is possible in an environment in which the first BSS and the second BSS overlap each other, based on the signal received from the second BSS;   determining an optimal value of transmission power of an antenna during the spatial reuse transmission in case that the spatial reuse transmission is possible; and   performing spatial reuse transmission to the first access point by using the antenna according to the determined optimal value of the transmission power,   wherein the determining of the optimal value of the transmission power comprises:
 configuring an initial value of the transmission power of the antenna, 
 transmitting a signal to the first access point through the antenna with a transmission power lower than the initial value in case that a signal transmission with the transmission power of the initial value to the first access point is successful, and 
 determining the optimal value of the transmission power based on the transmission power at previous successful signal transmission in case that the signal transmission to the first access point fails. 
   
     
     
         20 . The one or more non-transitory computer-readable storage media of  claim 19 , the operations further comprising:
 changing a modulation coding scheme (MCS) level to a second level which is one step lower than a first level and transmitting the signal modulated to the MCS level of the second level to the first access point with the transmission power of a first intensity in case that the signal transmission to the first access point fails in a state where the transmission power of the antenna is configured to a first intensity and the MCS level is configured to the first level;   determining the first intensity as the optimal value of the transmission power of the antenna in case that the second level modulation and the transmission of the signal with a first intensity transmission power are successful; and   determining a second intensity, which is one step higher than the first intensity, as the optimal value of the transmission power of the antenna in case that the second level modulation and the transmission of the signal with the first intensity transmission power fail.